Search for Proton Decay through p --> ν¯K+ in a Large Water Cherenkov Detector
Abstract
We present results of a search for proton decays, p-->ν¯K+, using data from a 33 kt˙yr exposure of the Super-Kamiokande detector. Two decay modes of the kaon, K+-->μ+νμ and K+-->π+π0, were studied. The data were consistent with the background expected from atmospheric neutrinos; therefore a lower limit on the partial lifetime of the proton τ/B\(p-->ν¯K+\) was found to be 6.7×1032 years at 90% confidence level.
- Publication:
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Physical Review Letters
- Pub Date:
- August 1999
- DOI:
- arXiv:
- arXiv:hep-ex/9904020
- Bibcode:
- 1999PhRvL..83.1529H
- Keywords:
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- High Energy Physics - Experiment
- E-Print:
- 5 pages, 5 eps figures, submitted to PRL